diff --git a/src/ast/ast_pp_util.cpp b/src/ast/ast_pp_util.cpp
new file mode 100644
index 000000000..c392c97b6
--- /dev/null
+++ b/src/ast/ast_pp_util.cpp
@@ -0,0 +1,71 @@
+/*++
+Copyright (c) 2015 Microsoft Corporation
+
+Module Name:
+
+    ast_pp_util.cpp
+
+Abstract:
+
+    <abstract>
+
+Author:
+
+    Nikolaj Bjorner (nbjorner) 2015-8-6.
+
+Revision History:
+
+--*/
+
+#include "ast_pp_util.h"
+
+void ast_pp_util::collect(expr* e) {
+    coll.visit(e);
+}
+
+void ast_pp_util::collect(unsigned n, expr* const* es) {
+    for (unsigned i = 0; i < n; ++i) {
+        coll.visit(es[i]);
+    }
+}
+
+void ast_pp_util::collect(expr_ref_vector const& es) {
+    collect(es.size(), es.c_ptr());
+}
+
+void ast_pp_util::display_decls(std::ostream& out) {
+    smt2_pp_environment_dbg env(m);
+    ast_smt_pp pp(m);
+    unsigned n = coll.get_num_sorts();
+    for (unsigned i = 0; i < n; ++i) {
+        pp.display_ast_smt2(out, coll.get_sorts()[i], 0, 0, 0);
+    }
+    n = coll.get_num_decls();
+    for (unsigned i = 0; i < n; ++i) {
+        ast_smt2_pp(out, coll.get_func_decls()[i], env);
+        out << "\n";
+    }
+}
+
+void ast_pp_util::display_asserts(std::ostream& out, expr_ref_vector const& fmls, bool neat) {
+    func_decl_ref asrt(m);
+    expr_ref e(m);
+    sort* b = m.mk_bool_sort();
+    asrt = m.mk_func_decl(symbol("assert"), 1, &b, b);
+    if (neat) {
+        smt2_pp_environment_dbg env(m);
+        for (unsigned i = 0; i < fmls.size(); ++i) {
+            e = m.mk_app(asrt, fmls[i]);
+            ast_smt2_pp(out, e, env);
+            out << "\n";
+        }
+    }
+    else {
+        ast_smt_pp ll_smt2_pp(m);
+        for (unsigned i = 0; i < fmls.size(); ++i) {
+            e = m.mk_app(asrt, fmls[i]);
+            ll_smt2_pp.display_expr_smt2(out, e);
+            out << "\n";
+        }
+    }
+}
diff --git a/src/ast/ast_pp_util.h b/src/ast/ast_pp_util.h
index a8f54b2c3..fc73b7eef 100644
--- a/src/ast/ast_pp_util.h
+++ b/src/ast/ast_pp_util.h
@@ -31,51 +31,15 @@ class ast_pp_util {
 
     ast_pp_util(ast_manager& m): m(m), coll(m, false) {}
 
-    void collect(expr* e) {
-        coll.visit(e);
-    }
+    void collect(expr* e);
 
-    void collect(unsigned n, expr* const* es) {
-        for (unsigned i = 0; i < n; ++i) {
-            coll.visit(es[i]);
-        }
-    }
+    void collect(unsigned n, expr* const* es);
 
-    void collect(expr_ref_vector const& es) {
-        collect(es.size(), es.c_ptr());
-    }
+    void collect(expr_ref_vector const& es);
 
-    void display_decls(std::ostream& out) {
-        smt2_pp_environment_dbg env(m);
-        unsigned n = coll.get_num_sorts();
-        for (unsigned i = 0; i < n; ++i) {
-            ast_smt2_pp(out, coll.get_sorts()[i], env);
-        }
-        n = coll.get_num_decls();
-        for (unsigned i = 0; i < n; ++i) {
-            ast_smt2_pp(out, coll.get_func_decls()[i], env);
-            out << "\n";
-        }
-    }
+    void display_decls(std::ostream& out);
 
-    void display_asserts(std::ostream& out, expr_ref_vector const& fmls, bool neat = true) {
-        if (neat) {
-            smt2_pp_environment_dbg env(m);
-            for (unsigned i = 0; i < fmls.size(); ++i) {
-                out << "(assert ";
-                ast_smt2_pp(out, fmls[i], env);
-                out << ")\n";
-            }
-        }
-        else {
-            ast_smt_pp ll_smt2_pp(m);
-            for (unsigned i = 0; i < fmls.size(); ++i) {
-                out << "(assert ";
-                ll_smt2_pp.display_expr_smt2(out, fmls[i]);
-                out << ")\n";
-            }
-        }
-    }
+    void display_asserts(std::ostream& out, expr_ref_vector const& fmls, bool neat = true);
 };
 
 #endif /* AST_PP_UTIL_H_ */
diff --git a/src/ast/ast_smt_pp.cpp b/src/ast/ast_smt_pp.cpp
index 64f6b0ab8..9279f50fe 100644
--- a/src/ast/ast_smt_pp.cpp
+++ b/src/ast/ast_smt_pp.cpp
@@ -913,9 +913,9 @@ public:
                     m_out << "(";
                 }
                 m_out << m_renaming.get_symbol(f->get_name());
-                // if (accs.size() > 0) {
+                if (!accs.empty() || !m_is_smt2) {
                     m_out << " ";
-                // }
+                }
                 for (unsigned j = 0; j < accs.size(); ++j) {                
                     func_decl* a = accs[j];
                     m_out << "(" << m_renaming.get_symbol(a->get_name()) << " ";
diff --git a/src/solver/tactic2solver.cpp b/src/solver/tactic2solver.cpp
index c19bb7547..d7dc3ad37 100644
--- a/src/solver/tactic2solver.cpp
+++ b/src/solver/tactic2solver.cpp
@@ -21,7 +21,6 @@ Notes:
 --*/
 #include"solver_na2as.h"
 #include"tactic.h"
-#include"ast_smt2_pp.h"
 #include"ast_pp_util.h"
 
 /**